KR20150139676A

KR20150139676A - roller assembly of multiple speed chain

Info

Publication number: KR20150139676A
Application number: KR1020140067557A
Authority: KR
Inventors: 최홍식
Original assignee: 한국체인공업 주식회사
Priority date: 2014-06-03
Filing date: 2014-06-03
Publication date: 2015-12-14

Abstract

The present invention relates to a roller assembly of a multiple speed chain and, more specifically, relates to a roller assembly of a multiple speed chain, which comprises: a center roller which is in contact with a lower end surface of a pallet; a side roller which is in both sides of the center roller; and a chain bush which becomes a rotation central axis of the center roller and the side roller. As the side roller which is in both sides of the center roller has a mutually integrated structure, in a production line wherein a multiple speed chain including the roller assembly according to the present invention is installed, a speed of a transfer object is stable. Moreover, when operating the line, an initial acceleration time is significantly short, and further, a faster moving speed is shown under the same motor driving force compared to the past.

Description

Roller assembly of multiple speed chain "

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roller combination for double speed, and more particularly to a roller combination for a double speed including a center roller and a side roller of a rationally coupled structure.

Unlike a conventional chain as a simple power transmission means, that is, a power transmission means for transferring a rotational driving force of a motor from a drive sprocket to a driven sprocket, a double speed chain is installed on a mass production line to transfer parts to be assembled on a pallet or finished products to a next process (Hereinafter referred to as "transported goods").

The pallet is in the form of a flat plate coupled on the top surface of the double speed, onto which the transports are loaded.

As shown in Fig. 4, which is a plan view of a double speed chain according to the conventional structure, the double speed chain comprises a plurality of roller assemblies 10 interconnected by links 20, 30 and pins 40, It is common that two rows of double speed chains are installed in parallel.

Each of the roller assemblies 10 includes a cylindrical sleeve 11, a center roller 12 fitted on the outer circumferential surface of the sleeve 11, side rollers 13 on both sides thereof, and a hollow portion in the sleeve 11 And a cylindrical chain bushing 14 that passes through the center bush 14 and serves as a central axis of rotation of the center roller 12 and the side roller 13. A pin 20 is coupled through the hollow portion of the chain bush 14 The inner link 30 and the outer link 40 are connected between the pin 20 and the pin 20 to form an annular chain having a length suitable for the production line scale.

Both ends of the pin 20 are coaking in order to prevent the inner link 230 and the outer link 40 from separating from each other.

The coupling between the center roller 12 and the side rollers 13 and the sleeve 11 is a loose fitting relationship, that is, a structure capable of relative rotation between the sleeve 11 and the rollers 12, 13.

Reference numeral "R" denotes a rail, and the side rollers 12 on the double speed chain roll along this rail R. [

The pallet has a rectangular band shape, and as shown in the figure, the pallet is moved in the arrow direction while covering the upper side of the double speed chain.

5, the side roller 13 receives a driving force transmitted from a driving sprocket and rolls in contact with the upper end surface of the rail R. That is, While the center roller 12 also rotates due to the frictional force generated between the center roller 12 and the side roller 13 rotating in contact with both sides thereof.

In other words, the center roller 12 also rotates without receiving the driving force directly from the drive sprocket.

As a result, the pallet P in contact with the upper surface of the center roller 12 is moved forward (see Fig. 4, see Fig. 4) at a faster speed than the side roller 13 as the center roller 12, .

According to the above-described principle, the moving speed of the pallet P is twice as fast as the moving speed of the side roller 13, and the double speed of the double speed chain means that.

The reason why the movement speed of the pallet P, that is, the movement speed of the conveyed object M, is faster than the movement speed of the side roller 13, that is, the linear movement speed of the chain is that the rotational drive force of the motor is made as low as possible, And to increase durability.

In consideration of the dynamics of the relevant portions including the friction mechanism between the side roller 13 and the top surface of the rail and the friction mechanism between the center roller 12 and the side roller 13, The diameter of the roller 13 is designed to be usually 2.5 times.

Although it is a reality that the above-mentioned 2.5-speed chain is used, it does not mean that the 2.5-speed speed itself is the most preferable, and research for reducing operating noise and increasing durability, which is a fundamental problem of chain transmission, continues.

Since the left and right side rollers 13 are independently rotatable on the outer circumferential surface of the sleeve 11 (loose fit structure), depending on the straightness and surface roughness of the rail R, The combination structure of the center roller 12 and the side roller 13 in the roller combination 10 of double speed of the conventional structure, such as rotation of only the roller 13, has an unreasonable side surface.

The rotation speed of the center roller 12, that is, the moving speed of the conveyed object is not stable in the production line provided with the double speed chain of the conventional structure, while the time until the moving speed at the appropriate level at the time of line operation, And the like are ultimately attributable to the unreasonable coupling structure of the roller combination and the resulting driving force loss.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a roller combination which is a double speed roller having a rational coupling structure.

The above-described object of the present invention is achieved by causing the side rollers on both sides of the center roller to rotate together in an integrated state.

The present invention relates to a speed chain comprising a center roller abutting a lower end surface of a pallet, side rollers on both sides of the center roller, and a cylindrical chain bush serving as a center axis of rotation of the center roller and the side roller, In the roller combination, the side rollers on both sides of the center roller have a mutual integrated structure.

As described above, according to the present invention, as the both side rollers rotate in the integrated state, it is possible to obtain the roller combination of double speed having a highly preferable rational coupling structure in which only one side roller can not be rotated independently.

In other words, the production line provided with the double speed chain including the roller combination of the rational combination structure according to the present invention is advantageous in that the moving speed of the conveyed material is stable while the initial speed-up time is short during the line operation, And a fast moving speed.

Further, since the left and right side rollers constituting the roller combination of the double speed according to the present invention are structured such that they always rotate simultaneously regardless of the straightness or the surface roughness of the rail, the effect of relaxing the precision requirement at the time of designing a mass production line It is also expected to bring.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a production line in a state of a double speed chain including a roller combination according to a first embodiment of the present invention, Fig.
FIG. 2 is a plan view showing a production line in a state where a double speed chain is installed including a roller combination according to a second embodiment of the present invention,
FIG. 3 is a plan view showing a production line in a state where a double speed chain is installed, including a roller combination according to a third embodiment of the present invention,
FIG. 4 is a plan view showing a production line in a state of a double speed chain including a roller combination according to a conventional structure, FIG.
5 is a side view showing a production line in a state where a double speed chain is installed according to a conventional structure.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a roller combination according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1, according to the combination roller assembly 100 of the first embodiment of the present invention, the center roller 120 abutting the lower end surface of the pallet P and the side rollers And a cylindrical chain bushing 150 serving as a center axis of rotation of the center roller 120 and the side roller 130. The side roller 130 on either side of the center roller 120 ) Are mutually integrated structures

The side rollers 130 on both sides of the center roller 120 are fitted in an interference fit on the outer circumferential surface of the sleeve 110 coupled with the chain bushing 150 as a rotation center axis, do.

In the case of the first embodiment, the spacing cylinders 140 are inserted between the side rollers 130 on both sides to maintain the spacing between these side rollers 130.

The coupling structure between the center roller 120 and the gap cylinder 140 is preferably a loose fitting relationship and the coupling structure between the gap cylinder 140 and the sleeve 110 is in an interference fit relationship.

As a result, the side rollers 130, the sleeves 110 and the spacer 140 rotate on the outer peripheral surface of the chain bush 150 in an integrated state, while the center roller 120 is integrated with the spacer 140 Thereby rotating the sleeve 110 on the outer circumferential surface.

Reference numerals 200, 300, and 400 denote pins, an inner link, and an outer link, respectively.

It was confirmed that the double speed chain including the roller combination according to the embodiment of the present invention was installed in an actual production line, and as a result, the double speed effect of about 3.5 times speed was obtained.

In other words, the moving speed of the conveyed material is about 3.5 times faster than the chain moving speed.

2, according to the roller combination combination 101 of the second embodiment of the present invention, the center roller 120 abutting the lower end face of the pallet P and the side rollers And a cylindrical chain bush 150 serving as a center axis of rotation of the center roller 120 and the side roller 131. The side rollers 131 on both sides of the center roller 120 Are the same as those of the first embodiment in that they are mutually integrated, but the left and right side rollers 131 are extended toward each other to come into contact with each other.

In this case, the side rollers 131 on both sides of the center roller 120 are engaged with each other on the outer peripheral surface of the sleeve 110 coupled with the chain bushing 150 as the rotational center axis, The same structure as in the first embodiment can be obtained, but the structure can be simplified and costs can be reduced by inserting no separate member, that is, a spacer, between the side rollers 131. [

3, according to the roller pair combination 102 of the third embodiment of the present invention, the center roller 120 abutting the lower end face of the pallet P and the side rollers And a cylindrical chain bush 150 serving as a rotation center shaft of the center roller 120 and the side rollers 132. The side rollers 132 on either side of the center roller 120 The roller bush 142 and the roller bush 142 are integrally joined to each other so that the roller bushing 142 and the roller bushing 142 are engaged with each other in an interference fit relationship, And the both side rollers 132 are integrated.

The roller bushing 142 is formed by integrating and deforming the sleeve 110 and the gap cylinder 140 in the first embodiment and the roller bushing 142 and both side rollers 132 thereof form the same inner circumferential surface Thereby rotating the chain bush 150 on the outer circumferential surface.

In this case, as a result of using the sintered material containing the roller bushing 142 and both side rollers 132 thereof, it was confirmed that the chain operating noise was reduced and the durability was remarkably improved.

10, 100, 101, 102: roller combination 11, 110: sleeve
12, 120: center roller 13, 130, 131, 132: side roller 20, 200: pin 30, 300:
40, 400: Outer link 140:
142: roller bush P: pallet

Claims

Side rollers 130, 131 and 132 on both sides of the center roller 120 and the center roller 120 and the side rollers 130, 131 and 132 The side rollers 130, 131, and 132 on both sides of the center roller 120 are integrally formed with each other in the combination of rollers of the double speed type comprising a cylindrical chain bush 150 as a rotation center axis of the center roller 120 (100, 101, 102).

The method according to claim 1,
The side rollers 130 and 131 on both sides of the center roller 120 are fitted in an interference fit relationship on the outer circumferential surface of the sleeve 110 coupled with the chain bushing 150 as a rotation center axis. Speed chain roller combination (100, 101).

The method according to claim 1,
Wherein the roller bushing 142 and the both side rollers 132 are integrally formed by coupling the roller bushing 142 in a tight fitting relationship between the both side rollers 132. [ .